Title:
POSITIVE ELECTRODE ACTIVE MATERIAL AND PREPARATION METHOD THEREFOR, POSITIVE ELECTRODE PLATE, SECONDARY BATTERY, BATTERY MODULE, BATTERY PACK AND ELECTRIC DEVICE
Document Type and Number:
WIPO Patent Application WO/2024/036472
Kind Code:
A1
Abstract:
Provided in the present application is a positive electrode active material. The positive electrode active material is made of secondary particles that are formed by stacking primary particles, wherein the primary particles comprise a lithium-rich manganese-based matrix material and a coating layer, which is located on the surface of the lithium-rich manganese-based matrix material, the coating layer comprising a fast ion conductor and a metal compound conductive agent. The positive electrode active material has improved cycling performance and rate capability. Further provided in the present application are a preparation method for the positive electrode active material, and a positive electrode plate, a secondary battery, a battery module, a battery pack, and an electric device which comprise the positive electrode active material of the present application.
Inventors:
WEI GUANJIE (CN)
GU LI (CN)
MENG ZHEN (CN)
ZHANG YU (CN)
LI XING (CN)
GU LI (CN)
MENG ZHEN (CN)
ZHANG YU (CN)
LI XING (CN)
Application Number:
PCT/CN2022/112738
Publication Date:
February 22, 2024
Filing Date:
August 16, 2022
Export Citation:
Assignee:
CONTEMPORARY AMPEREX TECHNOLOGY CO LTD (CN)
International Classes:
H01M4/505; H01M10/0525
Foreign References:
| CN105428637A | 2016-03-23 | |||
| CN111435747A | 2020-07-21 | |||
| CN105047921A | 2015-11-11 | |||
| CN113809331A | 2021-12-17 | |||
| CN112542583A | 2021-03-23 | |||
| US20220045325A1 | 2022-02-10 |
Attorney, Agent or Firm:
PEKSUNG INTELLECTUAL PROPERTY LTD. (CN)
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